Class1 107490 - UNI-Governor 107396 107269 software v 6 00 User Manual
Page 37

36
Notes
55
Self Test
65
Set Engine Type
81
Output Display
82
Xducer Display
83
Defaults
91
PWM
92
RAW XDCR
93
PSI
94
POT Counts
95
Show Setpoints
96
PRESET
97
Custom Range
99
SET--ACT PSI
0=IDLE 1=INC
The fffffirst time
irst time
irst time
irst time
irst time that the governor is powered up on a vehicle, the Message Center will display ENG?
Use the INC and DEC switches to find the proper engine and then press PRESET to save.
For all engines except CAT, t
he control signal is an analog voltage that is software controlled for minimum and
maximum output. There is a hardware minimum of 700 mV for idle and 4.2 V for maximum throttle .
If the signal is present and varies with the INC/DEC switches, it is functioning.
CAT uses a PWM signal. This is a 400 Hz square wave that varies from 12% to 87% duty cycle. It can be measured
as voltage. Range is 0.68 to 4.0 VDC.
A relay is incorporated that activates when the MODE switch is pressed if a 12 V input on terminal 2 of the 12 pin
connector. Common (30) at pin 11 and NO (87) at pin 12.
12 V at pin 2 allows Throttle Operation and 12 V at pins 2 and 10 allow Pressure Governing.
The transducer must have 5 VDC from the governor (B-6) at terminal B.
The transducer must have ground from the governor (B-5) at terminal A.
The transducer returns a variable voltage signal from terminal C to the governor (B-7).
Check for signal voltage and ground at the transducer with a meter between pins A and B
with the transducer unplugged.
It must b
It must b
It must b
It must b
It must be +5
e +5
e +5
e +5
e +5.0 VDC
.0 VDC
.0 VDC
.0 VDC
.0 VDC
+- 0
+- 0
+- 0
+- 0
+- 0.1 V
.1 V
.1 V
.1 V
.1 V. If the voltage and ground
are correct, plug the transducer in and check for PSI voltage at the governor (B-7). It must
range between 700 mV and 4.5 V and vary with pressure.
Engine selection is available from the keypad by entering 65:
IDLE INC INC IDLE IDLE INC IDLE INC
Engine types:
CAT using the CAT ID Input and CAT
a
12%
Cummins = IS for ISX ISL ISB ISC ISM
b
1.25
Navistar = NAV (All)
c
0.7
Detroit Diesel Series 40 = S40 (Navistar)
d
0.7
Detroit Diesel = DET (All DDEC)
e
0.7
Mack (V-MAC III)
f
0.7
Mercedes (MBE900)
g
1.0
Custom Range
h
x.x
Caterpillar = CAT ID wire
z
12%
Caterpillar = CAT (All) w/o ID wire
Z
12%
Press PRESET to save selection.
To return the governor to default settings, enter 83:
INC IDLE IDLE IDLE IDLE IDLE INC INC (PRESET)
Self diagnostics are entered from the keypad by entering 55:
IDLE INC IDLE INC IDLE INC IDLE INC
Complete instructions are on page 18.